After compiling my Fortran code from the terminal and generating the executable file, I opened Eclipse and imported the two folders (one where all the source files are: the other, where the executable and the input file are). After setting the debug configuration as follows:
Target: Generic OpenMPI Interactive
Number of processes: 2
Application program: /usr/loca/bin/mpirun
Program arguments: -n 2 exe_slide.x vortex.in

when I try debugging it I get the following error:
(first image attached)
This is line 96 he's referring to:
(second image attached)
Any hint of what's going on?